never got "reserve" icon

I never got the reserve icon to reserve windows 10 pro; so where/how can i get this accomplished?

I got it, reserved it and it went away. Will it come back? Do I need it?

What OS do you currently have?

8.1 64 bit

I believe it was possible to uninstall it, but I don't really know how to solve that problem. Sorry.

I was running the 10240 insider version of 10 and previous to the insider versions i was running 7 ultimate. Where do i go from here to get the official version of 10 pro?